The exterior features a Romanesque Revival architecture style including arched openings, and columns.

The most striking part of the exterior is the eastern European-inspired domed steeple, which rises 120 feet above the ground.

A ceiling mural of the Trinity and Communion of saints was created by Buffalo artist Jozef Mazur.

[1] The church's patron, Saint Stanislaus Kostka (1550–1568), was a Polish Jesuit canonized in 1726.

St. Stanislaus is one of the few churches in the US to house a relic of the late Pope John Paul II.